Combination oil and water cooler



1941- F. M. YOUNG I I COMBINATION OIL AND WATER COOLER Filed May 17,1959 m s/y TOR G N y vmw m mm r B 3 w. F

Patented Dec. 2, 1941 v Fred M. Young, Racine, Wis. Application May 17,1939, Serial No. 274,100

2 Claims.

The present invention relates to major and minor heat exchange coresformed in a single unit having means for simultaneously cooling thejacket fluid and the lubricating oil of-an internal combustion engine bymeans of a single fan. 5 1

Further objects of the present invention are to provide a minor oilcooling core which is slidably mounted between unoccupied ends of the.

headers of the major unit and provide a device which will have the samegeneral appearance of a single unit heat exchanger or radiator of the.conventional type and being adapted to be similarly positioned in itsrelation to the engine served.

Further objects of the present invention are to provide means wherebythe oil cooling or minor unit may be conveniently removed from theassembly. and to properly proportion the size of the jacket water andoil cooling cores so the complete device is simple, efficient andpleasing in appearance.

In devices of the class, it will be understood that the temperature ofthe jacket fluid and lubricating oil will not always reach their normaloperating temperatures simultaneously. I therefore provide means forindependent expansion and contraction of the two units.

To these and other useful ends'my invention consists of parts,combinations of parts, or their equivalents, and mode of operation, ashereinafter described and claimed and shownin the accompanying drawingin which:

Fig. 1 is a front view of the preferred form of -my complete device,fractions being cut away.

Fig. 2 is a sectional view of the device taken on line 2-2 of Figure 1and including the fan and fan shroud.

Fig. 3 is a fractional section taken on line 3-3 of Figure 1.

Fig. 4 is a top fractional view illustrating one manner of securing theoil cooling headers. to the headers of the jacket cooling device. I

As thus illustrated, I provide a unitary device comprising a major andminor unit, the major unit being designated in its entirety by referencecharacter A and having a fan and fan shroud which in their entirety aredesignated by reference character B. The minor unit in its entirety isdesignated by reference character C. a

The major unit comprises header caps I and H, each having tube plates I!which are preferv ably removably bound and sealed to the caps connectedtogether by means of a number of preferably flattened in cross sectiontubes l3 (see Figure 3). I provide a multiplicity of closely spaced fins[4 through which these tubes extend.

It will be noted that tubes I3 are nested together so they terminate asat l5 leaving a space between the headers for the oil cooling unit C.Unit C comprises headers l6 and i1 each having tube plates l8--l8 whichare preferably 10 bound and sealed to the header caps as illustrated inthe various figures.

Plates l8 are operatively connected together by means of a number oftubes I9 having a multiplicity of closely spaced fins 20 through whichthe tubes extend. Thus it will be seen that I'provide two separate heatexchange devices, one being considerably larger than the other and beingprovided with means whereby the unoccupied space between adjacent endsof the major headers provides room for the. reception of unit C.

Header I6 is provided with an inlet connection 2| and header I1 isprovided with an outlet connection 22. These inlet and outletconnections may clearly be used in the reverse order.

Headers l0 and II are provided with inlet and outlet connections 8 and 9and these headers may be provided with partitions 25 whereby the tubesare grouped so as to cause the fluid to pass through these groups inseries. This feature however, forms no part of the present invention andis illustrated and claimed in a copending application, Serial No.274,099, filed May 17, 1939.

A channel 23 rests over the upper ends of headers I0 and II, the flangesof which extend slightly below the upper edges of fins 20 (see Figure 3)thus to form a decorative top for the device and an anchor for the topof fan'shroud 30. i

0 Thus it will be seen that the lubricating oil of I the engine may becaused to travel through core C, and that the cooling fluid for thejackets of the enginemay be caused to flow through major core A asindicated by arrows.

Headers l6 and I! are preferably provided it Thus it will be seen thatheaders l6 and I1 may move slightly endwise and provide for unequalexpansion and contraction between-tubes as illustrated. Tube pla es areoperatively I3 and I9. Forexample, when the engine is first started, ifthe cooling fluid is heated more rapidly than the lubricating coil, thentubes B are free to expand faster than tubes IE or if the lubricating011 should heat more rapidly than the cooling fluid, then tubes l9 arefree to expand more rapidly than tubes l3. In either event, it will beseen that I have provided a simple and eflicient cooling fluid andlubricating oil heat exchanger and that the tubes of the cores are freeto expand and contract independently. Clearly member C may beconveniently removed or replaced and the entire assembly will have anappearance similar to conventional Jacket cooling radiators.

It will be noted that fan shroud 30 will shield from view headers l6 andI1 and that this member may be secured to the unit similar to the shroudmounting of a conventionally designed radiator. Thus the rear view ofthe complete unit will be conventional. The front may, if desired, beshielded from view by means of a decorative grille.

It will be noted that tubes l9 are round in cross section whereas tubesl3 are flattened. The fluid pressure in a Jacket cooler core is very lowand for that reason flattened tubes will answer the purpose better thanround tubes. However, in a lubricating system, it is frequentlynecessary to operate under considerable pressure and for that reason Ihave shown the tubes in unit C as being round.

Having thus shown and described my invention, I claim:

finned tubes forming operating connections therebetween for the greaterpart of the length of the headers leaving a relatively narrow spacebetween adjacent ends or the headers, a unitary oil cooler having spacedheaders and finned tubes forming operating connections therebetween,said oil cooler adapted to lie within said relatively narrow space andhaving an overall length slightly shorter than the space between saidfirst headers, the headers or said oil cooler being removably secured tosaid first headers and having means permitting independent freeexpansion and contraction relative to the space between said firstheaders.

2. A dual heat transfer device of the class described, comprising twospaced vertically positioned headers and finned tubes forming operatingconnections therebetween for the greater part of the length of saidheaders forming a Jacket liquid cooler but leaving a relatively narrowspace between the upper ends of the headers, an oil cooler comprisingspaced headers and finned tubes forming operating connectionstherebetween, the overall length of said oil cooler being slightly lessthan the space between said first headers and being removably andslidably mounted to thereby permit free expansion and contraction of theoil cooler relative to said 1. A dual heat transfer device of the classdescribed, comprising two spaced headers and jacket liquid cooler, aninverted U-shaped channel secured to the tops of said vertical headers,its flanges extending downwardly, a fan having a shroud, two sides ofsaid shroud being secured to said vertical headers and its top beingsecured to the adjacent flange of said channel.

FRED M. YOUNG.

